Plumb-level.



R. NIELSEN.

PLUMB LEVEL.

APPLICATION FILED JUNI: 27, 1913.

Patented Dec. 15, 1914.

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PLUMB LEVEL.

APPLIOATION `FILED JUNE 27, 1913.

Patented Dec. 15, 1914.

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ROBERT NIELSEN, 0F KAMSACK, SASKATCHEWAN, CANADA.

LUMB-LEVEL l n Specicaton of Letters Patent.

Patented Dec. 15, 1914.

Application filed June 27', 1913. Serial No. 776,079.

To all w/iom 'it may con com Be itknown that l, ROBERT Nmrsnn, a citizenof the United States, residing at lamsack, in the Province ofSaskatchewan and Dominion of Canada, have invented certain new anduseful improvements in Plumb Levels, of which the following is aspecification.

This invention relates to improvements in plumb levels and its object isto produce a device of this class that is simple in ccnstruction andecient in operation.

A further object is the provision of temporary locking means for thedial or-indicator by which the same can be retained in its positionshowing the desired reading after the position of the instrument hasbeen altered.

lll/'ith the foregoing and other objects in view the invention consistsin the combination and arrangement of parts to be hereinafter fullydescribed in the following speciication, pointed out in the claims andillustrated in the accompanying drawings which form a part of saidspecification and in whichligure l is a side elevation of my improvedplumb level with part of the frame broken away. Fig. 2is a longitudinalsection in side elevation. F ig. 3 is aplan of the device shown in Fig.l. l is a section taken on line l4 of Fig. 3. Fig. 5 is a view of thedevice. standing on end in which position it is used as a plumb.

Like reference characters indicate corresponding parts throughout theseveral views.

My device comprises a rectangular frame Y l which may be of anysubstantial material or design and which is provided with a recess 2 inits front face and formed with a socket 3 within which a metal casing 4is disposed; said casing having its extremities secured by screws orother suitable fastening means 5, 5 to the front face of the frame.rl'he casing l projects up through the recessed portion 2 of the frameand is formed with an aperture or sight 6 and an indicator 7 in eachlateral face.

l/Vithin the casing 4 adjusting screws 8-8 are secured upon which a4rotary disk 9, formed with a hub 9a, is secured that carries a weightl0 upon one portion of its periphery. The disk 9 is graduated intodegrecs along one half of its circumference, the center of the graduatedportion being marked to indicate zero and the quadrants on each sidethereof being markedto indicate successivelyT in opposite directions 90degrees. rlhe 'weight 10 is disposed upon the circumference of the diskdiametrically opposite the point zero, which latter point is keptopposite the pointers or indicators 7 by the said weight when theinstrument is in horizontal position.

l0A is a face plate secured to the front face of the frame.

@ne side of the casing is apertured as at l1 and the frame is aperturedin alinement therewith as at l2 and in the apertured portion of saidframe a pin 13 is pivotally hung which is formed at its innertermination with a shoe 14: capable of contact with the hub of the disk,9. A spring l5 secured in the apertured portion of the frame l bearsagainst the pin 18 to retain it in an adjusted aosition. i

When a reading is taken by the instrument the disk 9 may be retained inthe position showing the reading by manually forcing the shoe .leagainst the hub of the disk when the spring 15 will retain it togetherwith the said disk in that position.

What is claimed is l. In a combined level and plumb, a frame formed witha recess in its front face and with a socket opening into said recess, acasing disposed within said socket and projected into the recessedportion of said frame, a pointer formed integral with said casing, a`rotary disk journaled in said casing and adapted to move independentlythereof as said frame is moved, a weight circumferentially carried bysaid disk and means carried by said frame for releasable lockingengagement with said rotary disk for retaining the same in an adjustedposition with relation to the pointer of the said casing.

2. ln a combined level and plumb, a frame formed with a recess in itsfront face and with a socket opening into said recess, a casing disposedwithin said socket and projected into the recessed portion of saidframe, a pointer formed integral with said casing, a rotary diskjournaled in said casing and adapted to move independently thereof assaid frame is moved, a Weight ture in the presence of tWo subscribingWit circumerentially oai'ried by said disk and nesses.

a spring-pressed locking pin pivoted. in said frame for releasableengagement With the 5 said disk.

In testimony that I claim the foregoing as my own I have hereto afixedmy signalROBERT NIELSEN. t

Witnesses:

ALBERT LINDGREN, EMIL W. ELLIoKsoN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

